<!--
 * @Descripttion: 
 * @Author: yuxi
 * @Date: 2022-09-15 14:58:04
 * @LastEditors: yuxi
 * @LastEditTime: 2022-09-16 09:23:20
-->
<template>
  <div class="map-container" id="map-container">
    
    <div id="mouse-position"></div>
  </div>
</template>

<script>
import Circle from 'ol/geom/Circle';
import Feature from 'ol/Feature';
import GeoJSON from 'ol/format/GeoJSON';
import Map from 'ol/Map';
import View from 'ol/View';
import { Circle as CircleStyle, Fill, Stroke, Style } from 'ol/style';
import { OSM, Vector as VectorSource } from 'ol/source';
import { Tile as TileLayer, Vector as VectorLayer } from 'ol/layer';

export default {
  components: {

  },
  data () {

  },
  mounted () {

    const image = new CircleStyle({
      radius: 5,
      fill: null,
      stroke: new Stroke({ color: 'red', width: 1 }),
    });

    const styles = {
      'Point': new Style({
        image: image,
      }),
      'LineString': new Style({
        stroke: new Stroke({
          color: 'green',
          width: 1,
        }),
      }),
      'MultiLineString': new Style({
        stroke: new Stroke({
          color: 'green',
          width: 1,
        }),
      }),
      'MultiPoint': new Style({
        image: image,
      }),
      'MultiPolygon': new Style({
        stroke: new Stroke({
          color: 'yellow',
          width: 1,
        }),
        fill: new Fill({
          color: 'rgba(255, 255, 0, 0.1)',
        }),
      }),
      'Polygon': new Style({
        stroke: new Stroke({
          color: 'blue',
          lineDash: [4],
          width: 3,
        }),
        fill: new Fill({
          color: 'rgba(0, 0, 255, 0.1)',
        }),
      }),
      'GeometryCollection': new Style({
        stroke: new Stroke({
          color: 'magenta',
          width: 2,
        }),
        fill: new Fill({
          color: 'magenta',
        }),
        image: new CircleStyle({
          radius: 10,
          fill: null,
          stroke: new Stroke({
            color: 'magenta',
          }),
        }),
      }),
      'Circle': new Style({
        stroke: new Stroke({
          color: 'red',
          width: 2,
        }),
        fill: new Fill({
          color: 'rgba(255,0,0,0.2)',
        }),
      }),
    };

    const styleFunction = function (feature) {
      return styles[feature.getGeometry().getType()];
    };

    const geojsonObject = {
      'type': 'FeatureCollection',
      'crs': {
        'type': 'name',
        'properties': {
          'name': 'EPSG:3857',
        },
      },
      'features': [
        {
          'type': 'Feature',
          'geometry': {
            'type': 'Point',
            'coordinates': [0, 0],
          },
        },
        {
          'type': 'Feature',
          'geometry': {
            'type': 'LineString',
            'coordinates': [
              [4e6, -2e6],
              [8e6, 2e6],
            ],
          },
        },
        {
          'type': 'Feature',
          'geometry': {
            'type': 'LineString',
            'coordinates': [
              [4e6, 2e6],
              [8e6, -2e6],
            ],
          },
        },
        {
          'type': 'Feature',
          'geometry': {
            'type': 'Polygon',
            'coordinates': [
              [
                [-5e6, -1e6],
                [-3e6, -1e6],
                [-4e6, 1e6],
                [-5e6, -1e6],
              ],
            ],
          },
        },
        {
          'type': 'Feature',
          'geometry': {
            'type': 'MultiLineString',
            'coordinates': [
              [
                [-1e6, -7.5e5],
                [-1e6, 7.5e5],
              ],
              [
                [1e6, -7.5e5],
                [1e6, 7.5e5],
              ],
              [
                [-7.5e5, -1e6],
                [7.5e5, -1e6],
              ],
              [
                [-7.5e5, 1e6],
                [7.5e5, 1e6],
              ],
            ],
          },
        },
        {
          'type': 'Feature',
          'geometry': {
            'type': 'MultiPolygon',
            'coordinates': [
              [
                [
                  [-5e6, 6e6],
                  [-3e6, 6e6],
                  [-3e6, 8e6],
                  [-5e6, 8e6],
                  [-5e6, 6e6],
                ],
              ],
              [
                [
                  [-2e6, 6e6],
                  [0, 6e6],
                  [0, 8e6],
                  [-2e6, 8e6],
                  [-2e6, 6e6],
                ],
              ],
              [
                [
                  [1e6, 6e6],
                  [3e6, 6e6],
                  [3e6, 8e6],
                  [1e6, 8e6],
                  [1e6, 6e6],
                ],
              ],
            ],
          },
        },
        {
          'type': 'Feature',
          'geometry': {
            'type': 'GeometryCollection',
            'geometries': [
              {
                'type': 'LineString',
                'coordinates': [
                  [-5e6, -5e6],
                  [0, -5e6],
                ],
              },
              {
                'type': 'Point',
                'coordinates': [4e6, -5e6],
              },
              {
                'type': 'Polygon',
                'coordinates': [
                  [
                    [1e6, -6e6],
                    [3e6, -6e6],
                    [2e6, -4e6],
                    [1e6, -6e6],
                  ],
                ],
              },
            ],
          },
        },
      ],
    };

    const vectorSource = new VectorSource({
      features: new GeoJSON().readFeatures(geojsonObject),
    });

    vectorSource.addFeature(new Feature(new Circle([5e6, 7e6], 1e6)));

    const vectorLayer = new VectorLayer({
      source: vectorSource,
      style: styleFunction,
    });

     new Map({
      layers: [
        new TileLayer({
          source: new OSM(),
        }),
        vectorLayer,
      ],
      target: 'map-container',
      view: new View({
        center: [0, 0],
        zoom: 2,
      }),
    });
  },
  methods: {
  }

}
</script>

<style>
body,
html {
  padding: 0;
  margin: 0;
}

.map-container {
  width: 100vw;
  height: 100vh;
}
</style>